#instagramversusreality and #instagramversusreallife, that have been used to promote body positivity. In a related study, women aged 18–30 were shown posts using this hashtag that contained side-by-side images of women in the same clothes and setting, but one image was enhanced for Instagram, while the other was an unedited, "realistic" version. Women who participated in this experiment noted a decrease in body dissatisfaction. Sleep disturbance According to a study released in 2017 by researchers from the University of Pittsburgh, the link between sleep disturbance and the use of social media was clear. It concluded that blue light had a part to play—and how often they logged on, rather than time spent on social media sites, was a higher predictor of disturbed sleep, suggesting "an obsessive 'checking'". The strong relationship of social media use and sleep disturbance has significant clinical ramifications for young adults health and well-being. In a recent study, we have learned that people in the highest quartile for social media use per week report the most sleep disturbance. The median number of minutes of social media use per day is 61 minutes. Lastly, we have learned that females are more inclined to experience high levels of sleep disturbance than males. Many teenagers suffer from sleep deprivation as they spend long hours at night on their phones, and this, in turn, could affect grades as they will be tired and unfocused in school. In a study from 2011, it was found that time spent on Facebook has a strong negative relationship with overall GPA, but it was unclear if this was related to sleep disturbances. Since blue light has increasingly become an issue smartphone developers have added a night mode feature that does not cause as much strain to the eyes as a blue light would. Emotional effects One studied emotional effect of social media is 'Facebook depression', which is a type of depression that affects adolescents who spend too much of their free time engaging with social media sites. This may lead to problems such as reclusiveness which can negatively damage one's health by creating feelings of loneliness and low self-esteem among young people. Using a phone to look at social media before bed has become a popular trend among teenagers and this has led to a lack of sleep and inability to stay awake during school. Social media applications curate content that encourages users to keep scrolling